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EclipseLink 2.2.0, build 'v20110202-r8913' API Reference | ||||||||
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T
- the type of the selection item.public interface Subquery<T>
The Subquery
interface defines functionality that is
specific to subqueries.
A subquery has an expression as its selection item.
Method Summary | ||
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correlate(CollectionJoin<X,Y> parentCollection)
Create a subquery collection join object correlated to a collection join object of the enclosing query. |
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correlate(Join<X,Y> parentJoin)
Create a subquery join object correlated to a join object of the enclosing query. |
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correlate(ListJoin<X,Y> parentList)
Create a subquery list join object correlated to a list join object of the enclosing query. |
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correlate(MapJoin<X,K,V> parentMap)
Create a subquery map join object correlated to a map join object of the enclosing query. |
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correlate(Root<Y> parentRoot)
Create a subquery root correlated to a root of the enclosing query. |
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correlate(SetJoin<X,Y> parentSet)
Create a subquery set join object correlated to a set join object of the enclosing query. |
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Subquery<T> |
distinct(boolean distinct)
Specify whether duplicate query results will be eliminated. |
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java.util.Set<Join<?,?>> |
getCorrelatedJoins()
Return the correlated joins of the subquery. |
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AbstractQuery<?> |
getParent()
Return the query of which this is a subquery. |
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Expression<T> |
getSelection()
Return the selection expression. |
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Subquery<T> |
groupBy(Expression<?>... grouping)
Specify the expressions that are used to form groups over the subquery results. |
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Subquery<T> |
groupBy(java.util.List<Expression<?>> grouping)
Specify the expressions that are used to form groups over the subquery results. |
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Subquery<T> |
having(Expression<java.lang.Boolean> restriction)
Specify a restriction over the groups of the subquery. |
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Subquery<T> |
having(Predicate... restrictions)
Specify restrictions over the groups of the subquery according the conjunction of the specified restriction predicates. |
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Subquery<T> |
select(Expression<T> expression)
Specify the item that is to be returned as the subquery result. |
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Subquery<T> |
where(Expression<java.lang.Boolean> restriction)
Modify the subquery to restrict the result according to the specified boolean expression. |
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Subquery<T> |
where(Predicate... restrictions)
Modify the subquery to restrict the result according to the conjunction of the specified restriction predicates. |
Methods inherited from interface javax.persistence.criteria.AbstractQuery |
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from, from, getGroupList, getGroupRestriction, getRestriction, getResultType, getRoots, isDistinct, subquery |
Methods inherited from interface javax.persistence.criteria.Expression |
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as, in, in, in, in, isNotNull, isNull |
Methods inherited from interface javax.persistence.criteria.Selection |
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alias, getCompoundSelectionItems, isCompoundSelection |
Methods inherited from interface javax.persistence.TupleElement |
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getAlias, getJavaType |
Method Detail |
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Subquery<T> select(Expression<T> expression)
expression
- expression specifying the item that
is to be returned as the subquery result
Subquery<T> where(Expression<java.lang.Boolean> restriction)
AbstractQuery
method.
where
in interface AbstractQuery<T>
restriction
- a simple or compound boolean expression
Subquery<T> where(Predicate... restrictions)
AbstractQuery
method.
where
in interface AbstractQuery<T>
restrictions
- zero or more restriction predicates
Subquery<T> groupBy(Expression<?>... grouping)
AbstractQuery
method.
groupBy
in interface AbstractQuery<T>
grouping
- zero or more grouping expressions
Subquery<T> groupBy(java.util.List<Expression<?>> grouping)
AbstractQuery
method.
groupBy
in interface AbstractQuery<T>
grouping
- list of zero or more grouping expressions
Subquery<T> having(Expression<java.lang.Boolean> restriction)
AbstractQuery
method.
having
in interface AbstractQuery<T>
restriction
- a simple or compound boolean expression
Subquery<T> having(Predicate... restrictions)
AbstractQuery
method.
having
in interface AbstractQuery<T>
restrictions
- zero or more restriction predicates
Subquery<T> distinct(boolean distinct)
AbstractQuery
method.
distinct
in interface AbstractQuery<T>
distinct
- boolean value specifying whether duplicate
results must be eliminated from the subquery result or
whether they must be retained
<Y> Root<Y> correlate(Root<Y> parentRoot)
parentRoot
- a root of the containing query
<X,Y> Join<X,Y> correlate(Join<X,Y> parentJoin)
parentJoin
- join object of the containing query
<X,Y> CollectionJoin<X,Y> correlate(CollectionJoin<X,Y> parentCollection)
parentCollection
- join object of the containing query
<X,Y> SetJoin<X,Y> correlate(SetJoin<X,Y> parentSet)
parentSet
- join object of the containing query
<X,Y> ListJoin<X,Y> correlate(ListJoin<X,Y> parentList)
parentList
- join object of the containing query
<X,K,V> MapJoin<X,K,V> correlate(MapJoin<X,K,V> parentMap)
parentMap
- join object of the containing query
AbstractQuery<?> getParent()
Expression<T> getSelection()
getSelection
in interface AbstractQuery<T>
java.util.Set<Join<?,?>> getCorrelatedJoins()
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EclipseLink 2.2.0, build 'v20110202-r8913' API Reference | ||||||||
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